THERMAL CONDUCTlVlTY MEASUREMENTS ON WET PAPER SAMPLES AT HIGH TEMPERATURES
作者:
C.J. Nederveen,
J.G.M. Finken,
期刊:
Drying Technology
(Taylor Available online 1992)
卷期:
Volume 10,
issue 1
页码: 189-198
ISSN:0737-3937
年代: 1992
DOI:10.1080/07373939208916420
出版商: Taylor & Francis Group
关键词: paper;thermal conductivity;high temperature;high water content;dynamic measurements
数据来源: Taylor
摘要:
The effective thermal conductivity of a number of paper sheets was measured at high temperatures and various water contents. This was done by enclosing a pile of sheets between brass plates which were subjected to a sinussoidally varying temperature. The temperature variations at two positions in the pile were measured using thermocouples. From amplitude ratio and phase shift the conductivity was calculated. At low water contents, conductivity was proportional to the density of the paper and independent on temperature. At intermediate water contents, the conductivity increased markedly with temperature, attaining values higher than for pure water.
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